Colored stars (dabbling with ANSI escape codes)

stars.rb

lines = `tput lines`.to_i
cols = `tput cols`.to_i

# hide cursor
print "\e[?25l"

# clear screen
print "\e[2J"

at_exit do
  # show cursor
  puts "\e[?25h"

  # clear screen
  print "\e[2J"

  # reset color
  print "\e[0m"
end

50000.times do |i|
  line = rand 1..lines
  col = rand 1..cols
  r = rand 0..255
  g = rand 0..255
  b = rand 0..255
  # print "\e[48;2;%d;%d;%dm" % [r,g,b]
  print "\e[38;2;%d;%d;%dm" % [255-r,255-g,255-b]
  print "\e[#{line};#{col}f*"
  sleep 0.001
end